Hach Surveyor 4a, User Manual

Page: 29 / 32

Troubleshooting
Page 29
Section 6 Troubleshooting
6.1 Power Cables and Connections
Verify that the Surveyor 4a and the Sonde are properly connected.
Very that the Surveyor 4a and the Sonde are properly connected to the wall power outlet or
external battery if used.
Verify that the input voltage to the Sonde is between 6.5 and 15 volts by adding IBV or XBV to the
screen.
If the Surveyor 4a is drawing its power from its internal battery (IBP), verified the IBV (voltage)
reading on the display and verify that the battery was properly installed. Check the battery polarity
and voltage.
If the Sonde is equipped with an internal battery verify the IBV reading and verify that the battery
was properly installed. Check the battery polarity and voltage.
6.2 Internal Components
To avoid damage to the internal components when opening the Surveyor 4a, make sure that the
instrument is clean and dray and that all cables have been disconnected.
Check for the presence of water in the unit. If damp or slightly wet, dry thoroughly using a hair
dryer on low heat, a lint-free cloth, or a towel. Determine where the leak occurred and carry out
any repairs if possible.
If these checks do not reveal the problem, try to substitute other instruments, cables, and terminals
to determine the failing component.
For more information, contact Technical Support.
Table 4
Symptom Possible Solution
The Surveyor 4a will not power on. Charge the battery
The Surveyor 4a battery expires quickly.
Check the backlight time out interval.
Check to see if the GPS option was set to be constantly on.
Check the screen shutdown or timeout interval.